Gas-mixer.



E. MGARDLB.

GAS MIXER.

APPLICATION FILED S'EPT. 15, 1910.

Patented July 18, 1911.

UNITED STATES PATENT OFFICE.

EDWARD IVIGARDLE, 0F CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO GEORGE C. SCHNEIDER, OF CINCINNATI, OHIO.

GAS-MIXER.

To all whom it may concern:

Be it known that I, EDWARD MCARDLE, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Gas-Mixers, of which the following is a specification.

My invention relates to an improvement in gas mixers primarily adapted for use in connection with furnaces for boilers or the like.

The object of my invention is to provide a mixer preferably formed cylindrical, open at each end thereof, with a series of deflector plates within said cylinder angularly disposed toward the medial line thereof, of a nozzle leading into the mixer, and conical deflector means with its apex alined with the center of said nozzle, whereby the gaseous vapor is thrown outwardly upon entrance into the mixer, and the air drawn into the mixer conveyed toward the center thereof.

Another object of my invention is to provide a mixer of nozzle formation with a gas injector centrally disposed therein, and provided with an annular baffle-plate adjacent to the nozzle of the mixer and directing air currents in a right-angled path into the mixer, and a series of vaned deflectors within the mixer converging medially, the vanes of one deflector arranged staggeredly to that of its next adjacent deflector, and means for diverging the gaseous vapors at their entrance into the mixer.

Another object of my invention is to provide a mixer with a centrally disposed injector, or Bunsen element, extended therein, baffling means adjacent to the mouth end of the mixer, and serial staggered vaned deflectors converging medially, and means for diverging the gaseous vapors initially counter to the drawn in air-currents.

Another object of my invention is to provide a mixer with a centrally disposed injector, baffling means adjacent the mouth end of the mixer to prevent counter exterior currents of air and directing the air currents into the mixer in a rightangled path.

The features of my invention are more fully set forthY in the description of the accompanying drawings, forming a part of this specification, in which Figure 1 is a central section of my injector and mixer. Fig. 2 is a section on line Specification of Letters Patent.

AppIcaton led September 15, 1910.

Patented July 18, 1911.

Serial No. 582,202.

ac, Fig. 1. F ig. 3 is a section on line lv, fz), Eig. 1, with the deflector vanes in elevation. The combined injector and mixer in practice is supported a slight distance from a port opening leading into the combustion chamber of the furnace with the combustion taking place entirely within the furnace, and no flame or heat coming in contact with the injector and mixer. Compressed air, steam, or the like, is employed to create a blast materially assisting in drawing atmospheric air into the mixer.

1 represents the Oas su l ige ta ino` into the 'll-coupling' 2, aiilclflidpreselfits tubing connected to the 'coupling 2 at one end, its opposite end being contracted to provide a jet 4L and extended into the mixer cylinder 5.

6 represents a jet or nozzle within the tubing 3 and terminating in rear of the nozzle 4.

7 and 8 represent valves for controlling thevapor or fluid passing through the pipes 1 and 6, respectively.

The air blast injected into the tube 3 is created in any suitable manner, by blower or the like, not shown, and this form of injecting air or iuid under pressure within the gas supply nozzle is more or less a common expedient.

9 represents a baflie plate annularly projected from the sleeve 10 and secured to the tubing 3, and is provided with a series of radially extended bathing lugs 11, in the drawings four being shown, to which the mixer cylinder is secured with an air passage provided between the edge of the mixer cylinder and baffling plate 9. The lugs 11 and baffling plate 9 prevent counter currents exterior of the cylinder, which counter currents are apt to create rearward suction through the mixer, permitting gas to escape through the air passages, causing what is termed back flash. This, however, cannot occur, as such counter currents are broken by the lugs 11 and directed into the mixer.

The mixing cylinder is provided with the funnel-shaped nozzle end 12 for directing the gaseous mixture into the combustion chamber of the furnace.

13 represents a series of vanes annularly disposed within the mixing cylinder 5 and converging angularly toward the medial line of the cylinder 5, and preferably are secured upon a ring, and also as shown, the

vanes are preferably concave to assist in directing the air currents. Further, a multiple series of vanes are provided and preferably set staggered relative to each other, to break up the currents and produce a uniform mixture.

14; represents a conical deiiector, with its apex alined with the center of the nozzle 4l, and as illustrated, is secured and supported to several of the vanes of the lirst set of the series. Thus, the incoming charge of gas or mixture under pressure is diverged outwardly toward the interior periphery of the cylinder and in a forward direction passing between the staggeredly set vanes, and with the incoming atmospheric air, cross currents are had, thereby causing the products to be greatly intermixed, preliminarily to being injected within the furnace.

The employment of a multiple series or sets of vanes with one series staggeredly disposed to the adjacent series causes broken air-currents to be converged toward each other medially, around the inner periphery of the mixer and through the entire length thereof, and likewise directing the diverging gas currents to be directed in broken lines in similar paths, causing a thorough mixing` This practically provides a series of zigzag paths as contra distinguished from a straight path, thereby causing more or less a whirling action of the products.

I have termed, for the sake of brevity, the main gas nozzle and air nozzle within the gas nozzle as a Bunsen element in the claims.

Having described my invention, I claim l. A gas mixer, comprising a Bunsen ele ment, a chamber into which said Bunsen element centrally projects, baffling means adjacent to the mouth of the chamber to prevent exterior counter air currents and direct the air into the chamber, a multiple series of vane defiectors converging medially Within said chamber with the vanes of one series staggeredly disposed relative to its adjacent series, and means axially disposed with said Bunsen element within said chamber to diverge the products initially.

2. A gas mixer comprising a Bunsen element, a chamber having an open inlet and tapering outlet, said Bunsen element projecting centrally int-o said chamber, a baille plate adjacent to the inlet of the mixer pro vided with a series of radially extended baille lugs, to prevent exterior counter air currents and direct the air into the chamber in right-angled paths, means axially disposed with said Bunsen element Within said chamber to diverge the products initially, and a series of staggeredly disposed vane deflectors converging medially within said chamber.

3. A gas mixer comprising a Bunsen elcment, a chamber having an open inlet and tapering outlet, said Bunsen element projecting centrally into said chamber, a baille plate adjacent to the inlet of the mixer provided with a series of radially extended baille lugs, to prevent exterior air currents and direct the air into the chamber in rightangled paths, means axially disposed with said Bunsen element within said chamber to diverge the products initially, and a multiple series of vane deectors Within said chamber with the vanes of one series staggeredly disposed relative to its adj acent se* ries, all converging medially within said chamber.

n testimony whereof, I have hereunto set my hand.

EDVARD MCARDLE.

Witnesses OLIVER B. KAISER, EMMA SPENER.

Copies ofths patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

